关闭View Controller时的Exec_bad_access

Question

for some time I'm struggling to find the solution to this, I've searched google, stackoverflow but couldn't solve this.

I have 2 view controllers (let's call them VC1 and VC2), I can change between them with no problem. To present VC2 I use:

UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
UINavigationController* ctrl = [storyboard instantiateViewControllerWithIdentifier:@"histListID"];
[self presentViewController:ctrl animated:YES completion:nil];

To get back to VC1 I use:

- (IBAction)backPressed:(id)sender {
    [self dismissViewControllerAnimated:YES completion:nil];
}

VC2 contains a Table View and after I delete some cell if I try to get back to VC1 I get EXC_BAD_ACCESS (code = 1). I've never had to handle this before and I know it may have to do with something somewhere in my code. But I don't really know how to interpret it. Does it have something to do with my tableView? Am I doing something wrong when dismissing the controller?

If you need more code please ask, I really need to solve it.

PS: I have ARC turned on.

EDIT: Code used to delete cell

    [self deleteItemAt:chosenItem];
    [tableView reloadData];

Basically what deleteItemAt does is delete some objects from arrays:

- (void)deleteItemAt:(int)index
{

    [self.histModel deleteFileAtIndex:index];
    if ([self isWeekSelected]) {
        [self updateWeekDic];
    }else{
        [self updateMonthDic];
    }
    [callout dismissAnimated:YES];
}

Sorry if it doesn't do it correctly I didn't wrote that part of the code, but I don't think it has to do with deleting the cell.

Answer 1

Whenever you dismiss a viewController make sure to set all delegates to nil. The stack trace is showing a lot of objects being released and then tableview delegate callbacks. I suspect from this that its trying to call [delegate canEditCellAtRowindex] but the viewController has been dismissed and is no longer in the stack.

eg

[tableView setDelegate:nil];
[tableView setDataSource:nil];

Answer 2

In my opinion approved answer is not very good, because as it said in comments, you still have warning in console. I would prefer call [self.tableView setEditing:NO animated:NO] in view controller's dealloc or in viewDidDisappear: .